What is the result?

5 thoughts on “What is the result?”

1. c

   2

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2. c

   2

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3. D
   public static void main(String[] args) {
   String array[] = new String[2];
   int idx=0;
   for(String s:array){array[idx].concat(“Element”+idx);// throw java.lang.NullPointerException
   idx++;}
   for(idx=0;idx<array.length;idx++){
   System.out.println(array[idx]);//null null
   }
   }
   so result D

   5

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4. D
   public static void main(String[] args) {
   String array[] = new String[2];
   int idx=0;
   for(String s:array){array[idx].concat(“Element”+idx);// throw java.lang.NullPointerException
   idx++;}
   for(idx=0;idx<array.length;idx++){
   System.out.println(array[idx]);//null null
   }
   }
   so result D

   4

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5. D

   5

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